The Stovebolt Site Forums The Shop Area General Truck Talk Stuck valves Bent pushrods

I think all the top oils help
But I've used Marvel for years

There's no real substute for using your truck more often

Nate put me on to Sea Foam...I think it works pretty good keeps everything clean I think that may help you at this point NAPA has it

The gas is changing so much last years wonderstof just doesn't work today